Makefile-kubes

Directory

api/
|__service1/
|   |_ Dockerfile
|   |_ src/
|__service2/
|   |_ Dockerfile
|   |_ my.cnf
|__kube/
|   |_rc.yml
|__Makefile

Makefile

APP_IMAGE_TAG=$(shell git log -n 1 --pretty=format:%h service1)
NGINX_IMAGE_TAG=$(shell git log -n 1 --pretty=format:%h service2)
KUBE_TAG=$(shell git log -n 1 --pretty=format:%h kube)
RC_TAG=$(APP_IMAGE_TAG)$(NGINX_IMAGE_TAG)$(KUBE_TAG)

APP_IMAGE=my-repo/api-app:$(APP_IMAGE_TAG)
NGINX_IMAGE=my-repo/api-nginx:$(NGINX_IMAGE_TAG)

OLD_RC=$(shell kubectl get rc -l app=api -o template '--template={{(index .items 0).metadata.name}}')

define generate-rc
	sed -e 's/{{RC_TAG}}/$(RC_TAG)/g;s/{{APP_IMAGE}}/$(APP_IMAGE)/g;s/{{NGINX_IMAGE}}/$(NGINX_IMAGE)/g' kube/rc.yml
endef

define get-current-rc
	kubectl get rc api-$(RC_TAG)
endef

deploy: docker
	$(call get-current-rc) || $(call generate-rc) | kubectl rolling-update $(OLD_RC) --update-period="5s" -f -

docker: docker-api docker-nginx

docker-nginx:
	docker pull $(NGINX_IMAGE) || (docker build -t $(NGINX_IMAGE) nginx && docker push $(NGINX_IMAGE))

docker-api:
	docker pull $(APP_IMAGE) || (docker build -t $(APP_IMAGE) server && docker push $(APP_IMAGE))

rc.yml

apiVersion: v1
kind: ReplicationController
metadata:
  name: api-{{RC_TAG}}
  labels:
    app: api
    tag: "{{RC_TAG}}"
spec:
  replicas: 3
  selector:
    app: api
    tag: "{{RC_TAG}}"
  template:
    metadata:
      labels:
        app: api
        tag: "{{RC_TAG}}"
    spec:
      containers:
        - name: api-service1
          image: {{SERVICE1_IMAGE}}
          resources:
            requests:
              cpu: 500m
          ports:
            - name: application
              containerPort: 3000
        - name: api-service2
          image: {{SERVICE2_IMAGE}}
          resources:
            requests:
              cpu: 100m
          ports:
            - name: http
              containerPort: 80